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Finding the Fourth Proportional to 415,423.96, 623,240.98 and 115,904.39

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Solution

The fourth proportional to 415,423.96, 623,240.98 and 115,904.39 is: 173,885.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,423.96 : 623,240.98 = 115,904.39 : x
  2. Step 2: Convert to fraction form
    415,423.96/623,240.98 = 115,904.39/x
  3. Step 3: Cross multiply
    415,423.96x = 623,240.98 × 115,904.39
  4. Step 4: Simplify right side
    415,423.96x = 72,236,362,203.94
  5. Step 5: Solve for x
    x = 72,236,362,203.94/415,423.96
  6. Step 6: Final answer
    x = 173,885.88

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.